dsh-git-bash: Enabling Git Bash in DSH on Windows

The DSH Git Bash plugin is maintained by VviLliAm-qwq and addresses path resolution issues when DSH invokes the system Git Bash on Windows. It maps the Git for Windows installation path to a Bash environment recognizable by DSH, ensuring that the official Bash shell stack runs properly. No official installation command is currently available; guidance can be obtained through the plugin directory or GitHub. Developers should review the source code and license.